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Finding the Fourth Proportional to 293,090.80, 439,895.40 and 251,100.40

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Solution

The fourth proportional to 293,090.80, 439,895.40 and 251,100.40 is: 376,872.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,090.80 : 439,895.40 = 251,100.40 : x
  2. Step 2: Convert to fraction form
    293,090.80/439,895.40 = 251,100.40/x
  3. Step 3: Cross multiply
    293,090.80x = 439,895.40 × 251,100.40
  4. Step 4: Simplify right side
    293,090.80x = 110,457,910,898.16
  5. Step 5: Solve for x
    x = 110,457,910,898.16/293,090.80
  6. Step 6: Final answer
    x = 376,872.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.